This rabid dog here, uselessly trying to free himself from his shackles, was my latest attempt at solving this issue. At first, I thought he'd be angry and horny just enough so that, with other adjustments to his memories and instincts, he'd be able to contain himself and follow orders. But I was wrong. He went into a rampage as soon as he woke up for the first time. We had to stop him with enough tranquilizers to put a feral lion to sleep.
But I had made some progress. I had managed to get him instinctively aroused by my smell, so even if he was freed he wouldn't try to kill me, just fuck me like the beast he was. And now every time I got into the room he instantly got an erection, just by the scent of my sweat. I had him always pantsless so that I could see that happen, his large dick springing to attention never got boring. It's important to find happiness in the things in life you can control.
I slowly walked towards him, soaking in the view, and he stopped struggling, looking at me anxiously. I cleaned some of the drooling caused by his ball gag, and thought maybe I'd have some fun before going back to work. The meeting with the generals had been stressful, but now we had finally ended the hard part of the negotiations. The legal department would take over from here, I could finally focus completely on my research. Besides, with his overdeveloped genitals, this guy needed to be drained every day. Otherwise, he would overflow and spill his cum all over the floor. So why not make this chore something I could enjoy?
I made sure to keep him always clean, but he struggled against his chains so much that he constantly ended up sweaty and short of breath, looking at me in a silent rage. I put my hand over his hard chest and could feel it going up and down at a rapid pace under the thick fabric of his straitjacket, the long sleeves forcing him to hug himself and making him unable to get away from me. Not that he would, anyway. I ran my nose over his cheek and along his neck, lightly caressing him and taking in that intoxicating scent. He had a musky sweat, but also vaguely sweet, like ripe fruit. I couldn't get enough of it. Like most things on his body, his sweat had more pheromones than the average man, so it was an inebriating aroma, like entering a locker room full of dirty men, or diving in a pile of their used jockstraps. At first, it was a somewhat offensive smell, like having too much garlic in your food, but his pheromones would quickly kick in and you'd feel relaxed, excited, and slightly more interested in his manly features.
I gently ran my nose over his neck, sniffing him, and moaning softly. I loved how little I had to do to have him rolling his eyes, almost losing control over himself, and then finally closing them, lost in desire. The slightest display of affection was enough to have him momentarily forget he was chained against his will. But then his inhuman willpower would show itself again, and he'd shake off these overcoming feelings and hold tight to his awareness, staring me with a mean look. And all I had to do was please him a little more, and he'd lose it again for a few seconds.
His dick was rock hard, as it always was when we were in the same room. I rested my hand on his broad shoulder and looked at it, making sure to keep on massaging his chest. His cock was pointing right up, twitching every time I touched his nipple, and had veins so full of blood that you could almost see his heartbeat on them. His foreskin was fully retracted, and when I grabbed his dick and pulled it forward it completely covered his head, gathering the small drop of precum that had appeared on the tip, and then retracted again when I let go, spreading it evenly and making him well lubricated. Such an ingenious design.
I grabbed his balls, not so gently. He jumped up, startled by the mix of threat and sudden pleasure, and I lightly squeezed them just enough to get a complaint out of him. I loved having a man so big and strong at my mercy, and by the look on his eyes, he wasn't sure if he hated it or loved it. Maybe he hated that he couldn't help but love it, but he had been literally born to do this. I kissed his neck and slapped his balls a little, to get a feel of how big and heavy they were. He tried to close his legs and protect himself, but his feet were securely restrained apart enough to make that attempt useless, and he was forced to present his cock and balls to me at all times.
I took a step back, getting my hands off him. He shook his head violently, like someone drunk trying to sober up, and again gave me a very mean look. This man was pissed. But as soon as I kneeled in front of his dick his face changed from angry to curious, almost hopeful. He wanted this, and we were rapidly approaching the point where he would be too horny to pretend otherwise. I smelled the tip of his cock, his scent was much stronger down there, and with a violent twitch, a drop of precum appeared, then began trailing down, running along his shaft and balls, and then finally forming a long rope all the way to the ground. It's as if I had turned a tap on. I touched the tip of his dick with my nose again and smeared a little of that clear liquid all over my upper lip. The salty taste was delicious, and now I was constantly feeling the effect of his smell on me. I loved this feeling. While I was doing that, I looked up and saw he wasn't making angry faces anymore. His eyes only shouted one word: "Please."
"Okay, then. Enough teasing. Are you ready?" I asked, and didn't wait for an answer before trying to swallow as much of his big cock as I could. He grunted through the ball gag, drooling again, and stood perfectly still as I began sucking him, slowly but deeply, steadily increasing the pace as his grunts became louder and louder, his desire to break free and take charge of the situation stronger and stronger. But he couldn't. This monster was my toy today, and feeling my tongue run through the underside of his shaft and then caress the head of his cock, paying special attention to the frenulum, was overwhelming. I painfully opened my mouth as much as I could to fit him in, but simply forgot about the discomfort when I looked up and saw he was thunderstruck, unable to react. With one of my hands, I pulled his ballsack down, using just enough force to make it a little painful, but his cock immediately became even harder. He clearly liked being handled roughly. Then, with my other hand, I began slightly caressing his asshole, using a little bit of my spit to make it nice and wet. He moaned again, approving of this sensation, and tried to open his legs a little more to ease the access to his hole. But it just wouldn't relax enough so that I could get my finger in.
"What's the problem?" I asked, standing up and getting close to his face. He could feel the taste of his own cock on my breath. "Just relax a little more" I whispered in his ear, kissing it lightly and massaging his hole all the time. He closed his eyes and moaned, a little frustrated that I wasn't sucking him anymore, but relaxed a little bit. Not enough though. It was incredible how tight he remained even after I had used his hole so much over the past days. His sphincter's muscles were so strong that it would probably always be as if he had never been fucked before. Luckily, I had a way around this.
"Alright, then. Let's see if you like this." I took off my shirt, put my hand behind my head, and then ran my armpit over his nose. My smell always had a strong effect on him, but smelling my armpit directly was a sensory overload. I wondered how it must have felt, having a nose as sensitive as a dog's, and then being presented to the sweat of a man like this. He moaned loudly and then began sniffing me as if this would be his last opportunity to do so. His whole body became relaxed, especially his asshole, giving in to my intruding finger with a moan of painful pleasure. Once inside, I easily found his prostate, which was bigger than what you'd find on a natural man, and began massaging it. This new level of excitement became too much for him.
A red light flashed on the screen on my desk. I was monitoring his vitals and had activated a warning for when he was ready to shoot his load. I immediately stepped back, stopping everything I was doing. He opened his eyes and looked at me, confused, demanding I kept on pleasing him. The ball gag muffled his protests as I waited a few seconds, got on my knees again, and began sucking his dick and massaging his prostate with all the energy I could muster. That was kind of a challenge, given the size of his cock, but I was proud of my skills. Controlling my gag reflex, I tried to deepthroat him all the way to the base of his cock, but it was too much. "What a fucking giant," I thought, glad that I would have all the time in the world to keep practicing on him and eventually become the perfect cocksucker. Meanwhile, I kept looking up at him, his eyes rolled up, his mind gone. Another red warning, I stepped away again. This time he protested even angrier, short of breath, trying to hump the air in my direction. But the chains kept his waist stuck to the wall, and he had no option but to cool down a little.
